Improvement in corner-pieces and clamps for picture-frames



C. P. POINIER.

CORNER-PIECES AND c'LAMPs Fon PIcTURE-FRAMES. N5,170,39Z, Patented Nov.23,1875.

jay/I UI\rITEI STATES PATENT OFFICEc CHARLES P. POINIER, OF BOSTON,MASSACHUSETTS, ASSIGNOR OF ONE- HALF HIS RIGHT TO GEORGE BRYANT & CO.,OF SAME PLACE.

IMPROVEMENT IN CORNER-PIECES AND CLAMPS FOR PICTURE-FRAMES.

Specification forming part of Letters Patent No. 170,392., datedNovember 23, 1875; application filed July 24, 1875.

To all 'whom it may concern:

' formed on the under side of an angular corner-plate, which groove isadapted to receive a bead upon the outer edge of the frame, whereby theattachment of the plate to the frame is greatly strengthened when it isnailed thereto, and the liability to breakage ot' the said frame greatlylessened, as will be hereinafter more fully explained.

In the annexed drawings, the letter A designates an angular metallicplate, the branches a of which are at right angles the one to the other,and may be of a length proportionate to the size of the frame upon whichthey are l designed to be applied. These plates may be ot' any desiredstyle of ornamentation, or ot' any description of metal or alloythereof. They may even, where the frame is very light,

be made of wood. Whether of Wood or iron,

they will be provided upon their under side with a groove, b, ofsufficient depth to receive a-bead, B, of corresponding shape, upon thefront edge of the frame. Consequently, when the corner-plate is securedinto position by means of suitable bolts, screws, or pins, driventhrough perforations in the plate into the Wood-work ot' the frame, thefunction ot the said pins, bolts, or screws will be merely to preventthe escape ofthe bead from the groove on the under side of' thecorner-plate, while the strain produced by rough handling or a` casualfall will be shared, and, to a great eX- tent, borne, by the bead. Thiseffect is due to the fact that the bead serves to prevent the side andend rails from being separated when the angle-plate is secured inposition on the frame, so as to take in the said bead; also, to the factthat any strain, instead of being only borne by that portion ot theframe where the nails are driven, is distributed over all that portionot' the sides and ends otl the frame included or covered by the grooveor channel in the under side otl the angle-plate.

What I claim as new, and desire to secure by LetterspPatent, is-

As a new article ot' manufacture, an ornamental corner-piece and clamplforl pictureframes, consisting essentially of the plate A, having aright-angular groove, b, upon its un- Ader side, adapted to receive theupper bead of a picture-frame, substantially as described, and for thepurpose set forth.

CHARLES P. POINIER. Witnesses:

WILLIAM EDsoN, NATHL. EVANS, Jr.

